Update the Chyrp links

As per #367 the link 'http://chyrp.net' is no longer working.

However we will keep Chyrp on the list as per nodiscc in #381.

README.md

@@ -109,7 +109,7 @@ See also [Static Site Generators](#static-site-generators), [Content Management
   * [Anchor CMS](https://anchorcms.com/) -  Anchor is a free, lightweight, faster-than-a-bullet, simple blogging system, made for art–directed posts. ([Source code](https://github.com/anchorcms/anchor-cms)) `GPLv3` `PHP`
   * [Antville](https://antville.org) - Antville is a free, open source project aimed at the development of a high performance, feature rich weblog hosting software. ([Source code](https://github.com/antville/antville)) `Apache` `JavaScript`
   * [Blogotext](http://lehollandaisvolant.net/blogotext/en/) - a free blog-engine written in PHP and using SQLite. This offers you both an unmatched simplicity during installation and great performances. ([Source code](https://github.com/timovn/blogotext)) `MIT` `PHP`
-  * [Chyrp](http://chyrp.net/) - An extra-awesome, extra-lightweight blog engine ([Source code](https://github.com/chyrp/chyrp)) `MIT` `PHP`
+  * [Chyrp](https://github.com/chyrp/chyrp) - An extra-awesome, extra-lightweight blog engine `MIT` `PHP`
   * [Dotclear](http://dotclear.org/) - Take control over your blog! ([Source code](https://hg.dotclear.org/dotclear)) `GPLv2` `PHP`
   * [Ghost](https://ghost.org/) - Just a blogging platform ([Source code](https://github.com/TryGhost/Ghost)) `MIT` `Nodejs`
   * [htmly](https://www.htmly.com/) - Databaseless Blogging Platform (Flat-File Blog) ([Source code]((https://github.com/danpros/htmly)), [Demo](https://www.htmly.com/demo/)) `GPLv2` `PHP`